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Step 3.5 Flash

stepfun/step-3.5-flash

StepFun / Step

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StepFun flash lane for quick multimodal reasoning and coding assistance

Released
2026-01-29
Context window
256K
Max output
256K
Weights
Open weight
Modalities
TextInputTextOutput
Capabilities
ReasoningTool callTemperatureOpen weight
Providers
EmpirioLabs AIKilo GatewayOpenRouterQiniuStepFun (China)StepFun (Global)StepFun Step Plan (China)StepFun Step Plan (Global)Vercel AI GatewayZenMux

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